May 16, 2012By Sydney P. Freedberg

The likes of Jeb Bush, William Frist, Tommy Thompson and Haley Barbour aren’t typically heard from in the office of Thom Tillis, the Speaker of the North Carolina House of Representatives.

Yet the four Republican Party stalwarts, none of them a Carolina resident, have contacted Tillis’s office over a little- known bill to toughen state regulation of dental companies. They’ve been joined by Grover Norquist, the Tea Party favorite and anti-tax crusader who heads the Washington, D.C.-based Americans for Tax Reform.

“It’s not terribly common to have these types of names” intervening on a state bill, said Jordan Shaw, a spokesman for Tillis.

Their interest marks the Tar Heel State as the front line in a national struggle over dental management companies. Fueled by Wall Street money, at least six such firms are under scrutiny by two U.S. senators and authorities in five states over allegations that they soak taxpayers through excessive Medicaid billings, abuse patients via needless treatments and run afoul of laws that say only licensed dentists can practice dentistry.